JPH0268103A - Device for keeping space between filtration surfaces of filter plates of filter press - Google Patents

Abstract

PURPOSE:To easily replace the height, shape, and material of a space holding member if necessary by the arrangement wherein the space holding member is provided detachably at a predetermined location around a raw liquid feed port of a filter plate. CONSTITUTION:A space holding member 1 is provided on the filtration surface 2b of a filter plate 2 so that said member 1 abuts on the filtration surface 2b of a filter plate 2 adjacent to said member 1 or on a member 1 provided on the adjacent filter plate 2 to provide a specified space between the filter plates 2 adjacent to each other, wherein there are provided connecting parts 1b on the member 1, which are inserted into a raw liquid feed port 2a of the filter plate 2 so as to be supported detachably at predetermined locations around said port 2a, and protrusions 1a, which are disposed at an end of the connecting part 1b so that they are positioned between the filtration surfaces 2b of adjacent filter plates 2 to provide a predetermined space between opposing filtration surfaces. As a result, it is possible to easily replace the height, shape, material, etc., of the space holding member if necessary.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a filter press in which a filter plate of a filter press is provided with a gap holding member, and the gap between the filtration surfaces of adjacent filter plates is maintained constant by the gap holding member. This invention relates to a gap maintaining device between filter surfaces of a filter plate.

BACKGROUND OF THE INVENTION Hitherto, various structures of gap maintaining devices between filter surfaces of filter plates of this type of filter press are known. for example,
A gap retaining member is fixed to a predetermined location on the filtering surface of the filter plate, and the gap retaining members are butted against each other through a pair of filter cloths between adjacent filter plates to maintain a predetermined interval between the filtering surfaces of the adjacent filter plates. A device configured to form a gap is known.

Problem to be Solved by the Invention However, in the structure described above, each gap holding member is fixed to the filtration surface of the filter plate, so it cannot be removed, and the height of the gap holding member is changed depending on the filtration pressure. However, there was a problem that the shape, material, etc. could not be replaced.

Therefore, an object of the present invention is to solve the above-mentioned problems, and to provide a gap between the filtration surfaces of the filter plate of a filter press, which allows the height, shape, material, etc. of the gap retaining member to be easily replaced as necessary. An object of the present invention is to provide a gap retaining device.

Means for Solving the Problems In order to achieve the above object, the present invention is configured such that the gap holding member is detachably supported at a predetermined location around the stock solution supply port of the filter plate. That is, a gap retaining member is provided on the filtering surface of the filter plate, and the gap retaining member abuts on the filtering surface of the adjacent filter plate or the gap retaining member provided on the adjacent filter plate, so that the gap between the adjacent filter plates is In the gap maintaining device between the filtration surfaces of the filter plates of a filter press that maintains a constant gap between the filtration surfaces, the gap maintaining member is inserted into the stock solution supply port of the filter plate and the gap maintenance member is inserted into the stock solution supply port of the filter plate. a connecting part that is detachably supported at a predetermined location around the periphery; and a protrusion that is disposed at an end of the connecting part and is located between the filtration surfaces of adjacent filter plates to maintain a predetermined gap between the two filtration surfaces. It was constructed to include a section.

In the above configuration, the connecting portion can also be configured to have a fitting portion that fits into an opening edge of the stock solution supply port of the filter plate.

In the above configuration, the connecting portion may include a bag member at both ends thereof, and the protruding portion may be housed within the bag member.

Effects of the Invention In the above structure, one protrusion and a part of the connecting part of each gap holding member are inserted into the stock solution supply port of each filter plate, and the pair of protrusions are inserted into predetermined positions around the stock solution supply port. It is supported through a connecting part. When replacing the gap holding member as necessary, for example, depending on the filtration pressure, pull out the connecting part and one protrusion from the stock solution supply port, remove the gap holding member from the filter plate, and replace the desired gap holding member. Attach it to a filter plate instead.

According to the above structure, the gap holding member inserts one of the protruding parts and a part of the connecting part into the stock solution supply port of the filter plate, and then uses the connecting part to close the area around the stock solution supply port. Since the pair of protrusions are supported at predetermined locations on both filters, they can be easily attached to and removed from the filter plate, and the gap retaining member can be removed from the filter plate or removed from the protrusions as necessary. It is possible to replace the gap retaining member with a different material, height dimension, shape, etc. Furthermore, since it is not necessary to directly form the gap retaining member on the filter plate, the structure of the filter plate is simplified and manufacturing becomes easier.

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 14.

As shown in FIG. 1.2, the gap maintaining device between the filtering surfaces of the filter plate of the filter press according to this embodiment is a gap maintaining device inserted into the stock solution supply port 2a formed on the filtering surface 2b of the filter plate 2. Suspend the member l at a predetermined location of the two filters 2b, 2b,
Filter plate 2. ..., when closing the mold of 2, the adjacent filter plate 2.2
The filter surface 2b of the filter plate 2 between which the gap holding member l is adjacent
The filter plates 2.2 are configured to abut on each other to maintain a predetermined gap between the filter surfaces 2b, 2b between adjacent filter plates 2.2.

The above gap retaining member! is made of a molded article of hard synthetic resin, such as polypropylene resin. The gap holding member l is not limited to the above resin, but may be made of hard rubber, polyethylene resin, polystyrene resin, or the like. The gap holding member l may be made of metal, but a metal member may damage the filter cloth or the compression membrane of the compression filter plate, so it is preferable to use a hard synthetic resin rather than metal. is preferred.

The gap holding member 1 has a pair of truncated conical protrusions Iaja.
and a connecting band 1b as a connecting part connecting both the protrusions 1a, Ia are integrally fixed.

The connecting band tb is inserted into the stock solution supply port 2a of the filter plate 2 and suspended around the stock solution supply port, and is connected to both the protrusions 1.
a, I A is supported on the filter plate 2. It is preferable that the height of each protrusion 1a is approximately the same as the height of the frame 2c surrounding the filtration surface 2b relative to the filtration surface 2b.

Therefore, according to the above configuration, the gap retaining member! One protrusion 1a and a part of the connection band ``b'' are connected to the stock solution supply port 2 of the filter plate 2.
a, and hang the connecting band 1b from a predetermined location around the stock solution supply port, and then connect both protrusions 1a.

1a is suspended and supported on the amphoteric passages 2b, 2b of the filter bed of the filter plate 2. As a result, the filter plate 2. ..., when closing the mold of 2,
As shown in FIG. 2, each of the protrusions 1a comes into contact with the filtering surfaces 2b of adjacent filter plates 2, and the opposing filtering surfaces 2b,
A gap having a predetermined interval corresponding to the height dimension of the protruding portion 1a is formed between the protrusions 2b and 2b.

According to the above embodiment, the gap holding member l connects one protrusion 1a and a part of the connecting band tb to the stock solution supply port 2a of the filter plate 2.
After inserting the amphoteric duct 2b around the stock solution supply port 2a of the filtration bed with the connecting band 1b.

Since the projections 1a and 1a are suspended from the filter plate 2b, they can be easily attached to and removed from the filter plate 2. Therefore, if necessary, for example, depending on the filtration pressure, the gap holding member 1 may be removed from the filter plate 2, or replaced with a gap holding member 1 having a different material, height dimension, shape, etc. of the protruding portion 1a. Can be done.

Further, since it is not necessary to directly form the gap holding member 1 on the filter plate 2, the structure of the filter plate 2 is simplified and manufacturing becomes easier.

Note that the present invention is not limited to the above embodiments,
As illustrated below, it can be implemented for various other types of deafness.

For example, as shown in FIG. 3, a pair of adjacent filter plates 2,
2, the protrusion 1c of the opposing gap retaining member 3.4
, ld may have different diameters so that they can easily come into contact with each other. That is, in FIG. 3, the diameter dimension is set so that the vertical dimension of the left protrusion 1c is larger than the vertical dimension of the right protrusion lid between the opposing filter surfaces 2b, 2b. Make the difference. In this way, the filter plate 2 supporting the gap holding member 3 having the protrusion 1c having a large vertical dimension and the filter plate 2 supporting the gap maintaining member 4 having the protrusion 1d having a small vertical dimension are alternately arranged. If arranged, the opposing protrusions 1c and ld of the gap retaining member 3.4 will easily come into contact with each other between the opposing filter plates 2.2, and a predetermined gap will be maintained more reliably between the opposing filter surfaces. can be retained.

In addition, as shown in FIG. 4.5, the connection band ib is not only inserted into the stock solution supply port 2a of the filter plate 2, but also inserted into the center of the connection band 1b into the stock solution supply port 2a of the filter plate 2. A cylindrical fitting portion 1e to be fitted may be provided. That is, since the opening edge 2d of the stock solution supply port 2a of the filter plate 2 protrudes toward the center of the opening in a figure 7 shape, the fitting portion 1e is shaped like a cross section V so as to be fitted into the opening edge 2d. It is formed into a cylindrical body with a cross section bent in the shape of a letter. Therefore, by removably fitting the fitting part 1e into the opening edge 2d of the stock solution supply port 2a, the gap retaining member 5 can be attached to the fitting part 1e.
It is supported by the entire circumference of the opening line portion 2d of the stock solution supply port 2a through the fitting portion! A pair of connecting bands 1b and lb extending from e to both sides
It is possible to more reliably position the protrusions 1 f and If fixed to both ends of the filter surface 2 b. Further, in FIG. 5, a gap tg is formed in each protrusion If to reduce the impact when the protrusion If comes into contact with the filtering surface 2b.

In addition, in the embodiment shown in FIGS. 1 to 5 above, only one protrusion 1r is fixed to each end of each connecting band tb, but the sixth
．． As shown in Fig. 7, the ends 1h of the connecting band 1b are formed into a T-shape extending along the circumferential direction of the stock solution supply port 2a, and a substantially square truncated pyramid-shaped protrusion 11 is fixed to each end th. Then, a pair of protrusions 1 i and 1 i may be provided at the end 1 h of each connecting band tb.

In addition, in the above-mentioned FIG. 6.7, both protrusions li.

11 may be connected to form one band-shaped protrusion.

In addition, as shown in FIGS. 8 to IO, a pair of connecting bands 1j and lj are extended from the fitting part 1e fitted to the opening edge 2d of the stock solution supply port 2a toward each filtration surface 2b, and each connecting band is The gap retaining member 8 may be configured by fixing the protrusion 1k to the end of the gap 1j. Furthermore, the connecting bands 1j, 1j are not limited to extending downwardly with respect to the fitting portion 1e, but may be extended upwardly or horizontally in FIG. The protruding portion 1k may be fixed to.

Further, as shown in FIGS. 11-13, the connecting band tb is constructed by connecting a pair of rectangular cloth bags 9a for storing the protrusion with a plurality of, for example, five strings 9b, . . . , 9b. A pair of protrusions 9c may be provided within each cloth bag 9a.

Store 9c each. And the plurality of strings 9b.

..., 9b is hung on the opening edge 2d of the stock solution supply port 2a of the filter plate 2, and the protrusion 9c inside the cloth bag 9a,
9c is positioned at a predetermined location on each filter surface 2b. The number of protrusions 9c stored in each cloth bag 9a may be one as shown in FIG. 14, and each cloth bag 9a is provided with an opening 9d so that the protrusion 9c can be freely taken out from the opening 9d. You can also do this. In addition, in FIG. 12, IO indicates a filter cloth. In FIG. 12, the gap holding member 9 is placed inside the filter cloth 10, but depending on the properties of the filter residue, the gap holding member 9 may be placed outside the filter cloth 10.

In addition, the number, height, shape, etc. of the protrusions in each of the above-mentioned gap retaining members are arbitrary, and each protrusion is made into a hollow body so that it can absorb the impact when it comes into contact with the adjacent filter surface 2b. It's okay.

Further, the filter plate 2 is not limited to the ordinary filter plate shown in the figure, but may be a compressed filter plate, and the filter plate supporting the gap holding member is also a so-called center feed type filter plate in which the stock solution supply port 2a is formed on the filter surface 2b. This is not limited to the so-called top-feed type, in which the upper part of the frame part 2c projects upward in an inverted U-shape and the stock solution supply port 2a is formed in the projecting part, or conversely, the lower part of the frame part 2c is directed downwardly. A so-called bottom feed type in which the stock solution supply port 2a is formed in a U-shaped protrusion may also be used.

[Brief explanation of the drawing]

Figures 1.2 are a front view showing a gap retaining device between the filter surfaces of a filter plate of a filter press according to an embodiment of the present invention, and a state in which the gap retaining member of the gap retaining device is attached to the filter plate. 4.5 is a longitudinal sectional view of a main part showing a modified example of the gap retaining member shown in FIG. 1 attached to a filter plate;
The figures are a front view of a gap holding member according to another embodiment, a longitudinal sectional view of the gap holding member attached to a filter plate, and
6.7 is a main part front view and a bottom view showing a modified example of the gap holding member shown in FIG. 4, and FIGS. 8.9 and 10 are front views of gap holding members according to still other embodiments, respectively. X in Figure 8 in the bottom view and with the gap retaining member attached to the filter plate
- An X-ray longitudinal sectional view of the main part; FIGS. 11, 12, and 13 are a front view of a gap holding member according to another embodiment, respectively; a longitudinal sectional view and a front view showing a state in which the gap holding member is attached to a filter; FIG. 14 is a front view of a gap holding member according to a modification of the gap holding member shown in FIG. 11. 1.3, 5.6.8.9... Gap holding member, la,
1 c. ld, l r, 1 i, l k, 9cm protrusion, l b, 1 j...connection band, le...fitting part,
1g...Gap, 1h...End, 2...Filter plate, 2a
...Standard solution supply port, 2b...filtering surface, 2c...frame, 2d...opening edge, 9a...cloth bag, 9b...string, 9d...opening. Patent applicant: Kurita Machinery Co., Ltd. Agent: Patent attorney: Mr. Maeda and 2 others Fig. Fig. Fig. -1-X

Claims (3)

[Claims] (1) Gap retaining member (1) on the filter surface (2b) of the filter plate (2)
, 3, 5, 6, 8, 9).
, 3, 5, 6, 8, 9) are provided on the filter surface (2b) of the adjacent filter plate (2) or the gap retaining member (1, 3, 5, 6, 8) provided on the adjacent filter plate (2). . 1, 3, 5, 6, 8,
9) is a connecting part (1b, 1j, 9a, 9b) inserted into the stock solution supply port (2a) of the filter plate (2) and detachably supported at a predetermined location around the stock solution supply port (2a). ) and located between the filtration surfaces (2b) of the adjacent filter plates (2) at the ends of the connecting portions (1b, 1j, 9a, 9b), with a predetermined gap between the two filtration surfaces. The holding protrusion (1a, 1
c, 1d, 1f, 1i, 1k, 9c). A gap maintaining device between filter surfaces of a filter plate of a filter press. (2) A patent claim in which the connecting portions (1b, 1j) have a fitting portion (1e) that fits into the opening edge (2d) of the stock solution supply port (2a) of the filter plate (2). A gap maintaining device between filter surfaces of a filter plate of a filter press according to item 1. (3) The connecting portion (9b) has bag members (9
a), and the protrusion (9c) is provided within the bag member (9a).
A gap maintaining device between filter surfaces of a filter plate of a filter press according to claim 1, wherein the device accommodates the filter plate.